m30 diff idea ?

[jimbom30cab]

Hi guys, i'm building up the M30 conversion for my cab. Its going to be a cruiser rather than a racer but its got a shrick cam, lightened flywheel, chipped ECU, skimmed head and a few other mods so should be reasonably nice to drive.

I've been offered a 2.79 diff and was wondering what this would be like to drive in the car and what sort of RPM i would be doing at 70mph. I'm after a torquey cruiser tbh.

The other gear train bits are a M30 535 sport G/B and 15 inch BBS wheels.

Any advice most appreciated

thanks

[Rav335uk]

I have a 3.46 in the cab Jim, cruises along nicely, even in 5th at 30mph, no juddering at all.
Motorway wise, it'll sit at about 3200rpm at 100mph

[jimbom30cab]

3200rpm at 100mph

wow that sounds lovely.

[Rav335uk]

It "Wafts" along.

[leeparkes]

You sure your diff is a 3.46 Rav? at 3200rpm you should be doing around 81mph.
Sounds like you got a 2.91 which would give 96mph @ 3200rpm,
id check the tab on your diff moosh.

Jim, get in touch with Martin, im sure he was running a low diff on his cab.

http://www.e30zone.net/modules.php?name ... le&u=29299

[Rav335uk]

I'm pretty sure lee.
But it's been 2 yrs since I drove it last.

[leeparkes]

With a 2.91 it will hit 190mph flat out.

Ive got a 3.38 crown and pinion stashed away ready for when mine gets rebuilt.

[Rav335uk]

Well with the 3.46 I've had it off the clocks

[Rav335uk]

Well with the 3.46 I've had it off the clocks

[leeparkes]

3.46 you should hit 158mph flat out.

[Rav335uk]

I might swap that diff over to the chromie

[leeparkes]

Weld it up.

[Rav335uk]

Fook off

[e30topless]

Rav's Diff is impressive.. I have a pic of it

[The_Diddler]

Rav's Diff is impressive.. I have a pic of it

Hahahahahahahahaha................................

[Rav335uk]

Rav's Diff is impressive.. I have a pic of it

Hahahahahahahahaha................................

Fook.
Who raised the Titanic

[zaust]

Fav I run a 3:46 and a sport box. But it's more like 4k at 100. My clocks are out but not that much.